<?php
$str='{"isNoResult":"0","currType":"人民币","TranErrorCodeTemp2":"0","rd":[{"currType":"人民币","acctStat":"0","cashSign":"钞","frostBalance":"00000000000000000","availBalance":"00000000000161600","balance":"00000000000161600"}],"re":[{}],"rf":[{}],"TranErrorCodeTemp1":"0","rg":[{"sumBalance":"00000000000161600","currType":"人民币","cashSign":"钞"}],"rh":[{}],"acctType":"01","rk":[{}],"cashSign":"钞","TranErrorCode":"0"}';

$k=json_decode($str,true);
print_r($k);

?>